About the security content of iOS 8.4

This document describes the security content of iOS 8.4.

For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

iOS 8.4

Description: An issue existed in the install logic for universal provisioning profile apps, which allowed a collision to occur with existing bundle IDs. This issue was addressed through improved collision checking.

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: An attacker with a privileged network position may be able to intercept network traffic

Description: An intermediate certificate was incorrectly issued by the certificate authority CNNIC. This issue was addressed through the addition of a mechanism to trust only a subset of certificates issued prior to the mis-issuance of the intermediate. Further details are available about the security partial trust allow list.

Certificate Trust Policy

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Update to the certificate trust policy

Description: The certificate trust policy was updated. The complete list of certificates may be viewed at the iOS Trust Store.

CFNetwork HTTPAuthentication

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and laterImpact: Following a maliciously crafted URL may lead to arbitrary code execution

Description: A memory corruption issue existed in handling of certain URL credentials. This issue was addressed with improved memory handling.

CVE-ID

CVE-2015-3684 : Apple

CoreGraphics

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution

Description: Multiple memory corruption issues existed in the handling of ICC profiles. These issues were addressed through improved memory handling.

CVE-ID

CVE-2015-3723 : chaithanya (SegFault) working with HP's Zero Day Initiative

CVE-2015-3724 : WanderingGlitch of HP's Zero Day Initiative

CoreText

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Processing a maliciously crafted text file may lead to an unexpected application termination or arbitrary code execution

Description: Multiple memory corruption issues existed in the processing of text files. These issues were addressed through improved bounds checking.

CVE-ID

CVE-2015-1157

CVE-2015-3685 : Apple

CVE-2015-3686 : John Villamil (@day6reak), Yahoo Pentest Team

CVE-2015-3687 : John Villamil (@day6reak), Yahoo Pentest Team

CVE-2015-3688 : John Villamil (@day6reak), Yahoo Pentest Team

CVE-2015-3689 : Apple

coreTLS

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: An attacker with a privileged network position may intercept SSL/TLS connections

Description: coreTLS accepted short ephemeral Diffie-Hellman (DH) keys, as used in export-strength ephemeral DH cipher suites. This issue, also known as Logjam, allowed an attacker with a privileged network position to downgrade security to 512-bit DH if the server supported an export-strength ephemeral DH cipher suite. The issue was addressed by increasing the default minimum size allowed for DH ephemeral keys to 768 bits.

CVE-ID

CVE-2015-4000 : The weakdh team at weakdh.org, Hanno Boeck

DiskImages

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: A malicious application may be able to determine kernel memory layout

Description: An information disclosure issue existed in the processing of disk images. This issue was addressed through improved memory management.

CVE-ID

CVE-2015-3690 : Peter Rutenbar working with HP's Zero Day Initiative

FontParser

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Processing a maliciously crafted font file may lead to an unexpected application termination or arbitrary code execution

Description: Multiple memory corruption issues existed in the processing of font files. These issues were addressed through improved input validation.

CVE-ID

CVE-2015-3694 : John Villamil (@day6reak), Yahoo Pentest Team

CVE-2015-3719 : John Villamil (@day6reak), Yahoo Pentest Team

ImageIO

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Processing a maliciously crafted .tiff file may lead to an unexpected application termination or arbitrary code execution

Description: A memory corruption issue existed in the processing of .tiff files. This issue was addressed with improved bounds checking.

CVE-ID

CVE-2015-3703 : Apple

ImageIO

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Multiple vulnerabilities exist in libtiff, the most serious of which may lead to arbitrary code execution

Description: Multiple vulnerabilities existed in libtiff versions prior to 4.0.4. They were addressed by updating libtiff to version 4.0.4.

CVE-ID

CVE-2014-8127

CVE-2014-8128

CVE-2014-8129

CVE-2014-8130

Kernel

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: A malicious application may be able to determine kernel memory layout

Description: A memory management issue existed in the handling of HFS parameters which could have led to the disclosure of kernel memory layout. This issue was addressed through improved memory management.

CVE-ID

CVE-2015-3721 : Ian Beer of Google Project Zero

Mail

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: A maliciously crafted email can replace the message content with an arbitrary webpage when the message is viewed

Description: An issue existed in the support for HTML email which allowed message content to be refreshed with an arbitrary webpage. The issue was addressed through restricted support for HTML content.

CVE-ID

CVE-2015-3710 : Aaron Sigel of vtty.com, Jan Souček

MobileInstallation

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Description: An issue existed in the install logic for universal provisioning profile apps on the Watch which allowed a collision to occur with existing bundle IDs. This issue was addressed through improved collision checking.

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may compromise user information on the filesystem

Description: A state management issue existed in Safari that allowed unprivileged origins to access contents on the filesystem. This issue was addressed through improved state management.

CVE-ID

CVE-2015-1155 : Joe Vennix of Rapid7 Inc. working with HP's Zero Day Initiative

Safari

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may lead to account takeover

Description: An issue existed where Safari would preserve the Origin request header for cross-origin redirects, allowing malicious websites to circumvent CSRF protections. The issue was addressed through improved handling of redirects.

CVE-ID

CVE-2015-3658 : Brad Hill of Facebook

Security

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Description: An integer overflow existed in the Security framework code for parsing S/MIME e-mail and some other signed or encrypted objects. This issue was addressed through improved validity checking.

CVE-ID

CVE-2013-1741

SQLite

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Description: Multiple input validation issues existed in the parsing of SIM/UIM payloads. These issues were addressed through improved payload validation.

CVE-ID

CVE-2015-3726 : Matt Spisak of Endgame

WebKit

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Visiting a malicious website by clicking a link may lead to user interface spoofing

Description: An issue existed in the handling of the rel attribute in anchor elements. Target objects could get unauthorized access to link objects. This issue was addressed through improved link type adherence.

CVE-ID

CVE-2015-1156 : Zachary Durber of Moodle

WebKit

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: A maliciously crafted website can access the WebSQL databases of other websites

Description: An issue existed in the authorization checks for renaming WebSQL tables which could have allowed a maliciously crafted website to access databases belonging to other websites. This was addressed through improved authorization checks.

CVE-ID

CVE-2015-3727 : Peter Rutenbar working with HP's Zero Day Initiative

WiFi Connectivity

Available for: iPhone 4s and later, iPod touch (5th generation) and later, iPad 2 and later

Impact: iOS devices may auto-associate with untrusted access points advertising a known ESSID but with a downgraded security type

Description: An insufficient comparison issue existed in WiFi manager's evaluation of known access point advertisements. This issue was addressed through improved matching of security parameters.

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